Sliding window unit



Feb. 25, 1936, L A. E. HSK 2,032,170

SLIDING WINDOW UNI'J| Feb. 25, 1936. A. E. FlsK SLIDING WINDOW UNIT 3 Sheets-Sheet 2 Filed March 6, 1933 @E QQ Feb.. 25, E936. A. E. FISK` 1 2,032,170

SLIDING WINDOVSI UNIT Filed March 6, 1933 3 Sheets-Sheet 3 A50/UV@ MW 'mi Patented Feb. 25, 1936 Piirlazli OFFICE SLIDING WINDOW UNIT Arthur E. Fisk, Pasadena, Calif., assignor of onehalf to Frederick H. Ruppel, Pasadena, Calif.

Application March 6, 1933, Serial No. 659,599

' 19 Claims.

My invention relates to a window unit adapted to be completely pre-fabricated and to be placed bodily into a suitable recess provided therefor in a building frame structure, thereby eliminating a great deal of labor and time now expended in building Window structures into the walls of buildings.

Many residences are now constructed with sliding sash adapted to be moved from the window opening into recesses provided in the wall at the sides thereof. These sash members are carried by tracks which must be properly aligned and supported in conjunction with the wall structure if a free movement of the sash between closedvand open positions is to be maintained.

It is Well known that in lighter types of construction, such, for instance, as employed in residences, there is a settling or readjustment of the studs in the wall after the building has been completed for a period of time. Due to the load superposed thereon, a stud adjacent 'a window opening may move downwardly with the result that the horizontal members and other structural parts connected thereto are moved from their original positions. In many instances this results in disalignment of the window structure so that the sliding sash will not move freely. It isA av principal object of the present invention to avoid or compensate for such diiiiculties as above set forth, by the provision of a completely preformed sliding sash Window unit having a rigid metal frameV defining' a window opening and recesses or spaces at the sides thereof into which the sliding sash members may be moved.

It is a further object of the invention to provide a window unit of the above character so constructed that it may be installed in position within a wall structure without being tied to the wall framework. Where the invention is 4) employed, a readjustment or settling of a stud or other frame member adjacent, the window opening does not transmit strains to the frame in which the sliding sash members are carried, and in this manner binding of the sash due to 45 changes in position of the fra-me members of the building is avoided. Accordingly, it is an object of the invention to provide a window structure for use in a building Wallin which frame members yfor the Wall define an opening to re- 50 ceive the window unit, and a window unit held in such opening by means which engage the side faces of the window unit in a manner to prevent transverse movement of the Window unit, but permitting a reasonable vertical and longitudinal relative movement 'of the window unit and (Cl. 18S-64) the wall frame members deiining the opening in which the window unit is received.

It is a further object of the invention to provide a wall structure of the above general character in which the window unit is tied to the wall 5 facing element, which facing element may readily consist of a layer of metal lath and plaster. In this construction the window unit floats in the frame. structure of the wall but is definitely positioned and secured by being tied to the inner and outer facings of the wall which are applied to the frame structure. r

It is a further object of the invention to provide a. window unit of simple, strong, and durable construction having a simple form of track means and a novel means of adjustment for the tracks which will permit removal of one or all of the sash members as may be desired.

It is a further object of the invention to provide a novel and positive, but easily operated, 2o handle and latch means for the sash members of the Window unit.

It is a. further object of the invention to provide a sash element having a. simple and efllcient means for securing glass or screen in the sash frames.

It is a further object of the invention to provide a window unit having a shutter sash equipped with a. simple shutter structure adapted to be readily manipulated when the shutter sash is in a position in the window opening, to permit entrance of light and air in the manner of a Venetian blind, but which may be locked in closed position so as to completely obscure the window opening.

A further object of the invention is to provide a window unit having a lower trackage therein and a lower wall so formed that natural drainage of water or other fluids will be accomplished.

Further objects and advantages of the invention will be made evident throughout the following part of the specification.

Referring to the drawings, which are for illustrative purposes only,

Fig. 1 is a perspective view of an embodiment 45 of the invention.

Fig. 2 is an enlarged, partly sectioned plan view of the window unit, with the protective cover plate of the unit removed.

Fig. 3 is a front elevation showing the window 5o unit in place in an opening provided therefor in the wall frame of a structure.

Fig. 4 is an enlarged fragmentary section on a plane represented bythe line 4-4 of Fig. 3, showing the manner in which the wall facing element is tied to the window unit, and also the manner in which the window unit is secured in 'the opening of the frame structure so as to be practically immovable in transverse direction.

Fig. 5 is an enlarged fragmentary section taken as indicated by the line 5-5 of Fig. 3, it being assumed that all of the sash members on the left-hand side of the window unit are in position to be intersected by the plane represented by the line 5 5.

Fig. 6 is a further enlarged fragmentary elevational view taken as indicated by the arrow 6 of Fig. 5.

Fig. 7 is an enlarged fragmentary section on plane represented by the line 1-1 of Fig. 2.

Fig. 8 is an enlarged fragmentary section on a plane represented by the line 8--8 of Fig. 2.

Fig. 9 is an enlarged fragmentary elevational view showing the latch means for the sash members in engagement.

Fig. 10 is a. fragmentary section on a plane represented by the line Ill-I0 of Fig. 9.

Fig. l1 is a fragmentary plan View showing the lower portions of a pair of sash'members iin engagement.

Fig. 12 is a fragmentary elevational view corresponding to Fig. 11.

The preferred embodiment of the window unit is in the form of a rectangular prismoidal structure 2| having a window opening 22 formed l thereinbetween end portions 23 which are hollow so as to form spaces or recesses 24, as shown in Fig. 4, within the end portions 23 which lie on opposite slides of the window opening 22 and are in communication with the opening 22 through vertically elongated portals 25 formed between vertical frame members 26 and 21 which are preferably of rectangular tubular cross section. The window unit 20 is shown with sheet metal side walls 28 covering the end spaces 24, but it is to be understood that such side walls are employed principally to protect the spaces 241 from entrance of moisture, plaster, or other foreign materials thereinto, and such coverings 28 are not necessarily part of the frame structure 30 which includes the members 26 and 21 and defines the window opening 22 and the spacers 24 at the -the ends of the spaces 24.

sides thereof. v

As shown in Figs. 2 and 7, the frame structure 30 employs a pair of upper horizontal frame members 3| and 32 which extend across the upper part'of the window opening 22 and to the On opposite sides of the windowopening 22, the vertical frame members 21 extend downwardly from the frame member 32 to a lower horizontal frame member 33 best shown in Figs.,4 and 5. 'I'his horizontal frame member 33 extends the full length of the window u nit structure 2| and denes the lower boundary of the leftward or inner portion of the Window opening 22. From the lower ends of the vertical frame members 26 which extenddownwardly from the upper horizontal frame member 3|, horizontal frame members 34 extend outwardly within the lower forward parts of the spaces 24. The frame members 34 do not project into the window opening 22 but extend only into the side spaces 24. As shown in Fig. 5, the members 35 are disposed '1n a plane below the plane of the member 33, and extending across the lower faces of the members 33 and 35, a lower wall 36 of sheet metal is secured in any desired manner, as by spot welding. It is a feature of the invention to slope pthis bottom wall k36 outwardly and downwardly. rlthe direction of the arrow 31 of Fig. 4, or in leftward direction as shown in Fig. 5. The central portion 38 V"of the wall 36 disposed Within the window opening 22 is extended outwardly in the direction of the arrow 31 beyond the outer faces of the Vertical members 26 so that the forward edge 40 of the central portion 38 will project at least as far as the surface 4| of a wall finishing element 42, shown in the present disclosure of the invention as consisting of a web or layer of metal lath 43 and plaster 44. If desired, the ends of the lower wall 36 maybe slightly raised so that such end portions of the wall 36 will slope toward the central portion 38 as well as forwardly. It is preferable that the wall 36 be made in one continuous piece as it forms a means for draining from the interior of the window unit any liquids which may enter the same.

Extending substantially throughout the entire length of the window unit, a lower track member 45 is secured in a position slightly raised above the lower wall 36 by means of spacer blocks 46 secured in place by use of screws 41. track member provides three upwardly projecting ribs or rails 48 connected together by lower walls 50 which extend under channels 5| by which the rails 48 are separated. The sides of the track member 45 are formed to provide laterally extending anges 52 which engage or are proximate to the inner faces of the longitudinal frame members 33, 34, and 35. fAbove the anges 52 are channels 53 lwhich are approximately half the width of the channels 5|. For the drainage of the channels 5|, openings 55 are formed in the lower walls which interconnect the rails 48. Accordingly, any water which enters the channels 5| will drain through the openings 55 and will then ow to the exterior along the upper face of the lower wall 36.

An upper track member 56 is extended longitudinally through the upper portion of the structure 2|, between the upper frame members 3| and 32, as shown in Figs. 2 and 7. This upper track member 56 is of the same cross sectional form as the track member 45 but is inverted so that the three rails or ribs 48' thereof project downwardly. The frame members 3| and 32 are connected together by cross bars or plates 51 and 58, the ends of which are secured to the members 3| and 32 by spot welding or other suitable means. As shown in Fig. '7, each of the cross bars 51 has a block 60 secured to the under face thereof provided with a vertical opening 6| within which the cylindrical shank 62 of a screw 63 extends, there being a nat-headed screw 64 threaded into the upper end of the shank 62 to prevent removal thereof from the opening 6|. The lower end of the screw 63 is threaded through an opening 65 in the central rib 48. Inthe form of the window unit shown, two of the screws 63 are employed, and by rotating the same by application of a screw-driver to the lower slotted ends thereof, the upper track member 56 may be causedto move vertically for the purpose of adjustment. Vertical guide means for the track member 56 are formed by the cylindrical Shanks 66 of screws 61 rwhich extend downwardly from blocks 68 mounted on the lower faces of the cross bars 58. Openings 10 are formed in the central rib 48' of the member 56 to receive the shanks 66 of the screws 61, therebeing counterbores 1| formed in the lower ends of the openings 10 to receive the heads 12 of the screws 61.

In the form of window unit shown, three lower tracks 48 and three upper tracks 48' are pro- The lowery between upper and lower rails 48 and I8' so as to be slidable between open and 'closed positions relative to the window opening 22. When the sash members 13, 14S, and 15 are in open position, they rest within the side spaces 24 as shown in Figs.

l and 4. As shown in Fig. 5, the lower horizontal members 16 and 1t of the sashes each provide a horizontal wall section i8, from the edges of which webs 80 extend downwardly on opposite sides of the ribs de. In the channels 8i formed between the webs 86, rollers $2 are mounted on shafts 83 s' so as to engage the upper faces of the ribs and to enable a free rolling movement of the sashes 12, id, and 1S in the window unit structure 2i. As shown in Fig. '7, the sashes 13,15, and 1b have upper horizontal members 1G' and il' which are of the same cross section as the members 'iii and 11 shown in Fig. 5 but are inverted so that the side webs i3@ thereof will project upwardly on opposite sides of the ribs dii of the upper track 5%. Although rollers are not shown in the upper members 76' and i1. they may be employed'as desired or as conditions may require.

As shown in Fig. el, the sashes i3 and lf3 have inner and outer vertical members ed and @E con necting the ends of the upper and lower horizontal members lfd and it, and the sashes iti have inner and outer vertical members dii and t? connecting the ends of the horizontal members 'il and ifi'. Each or" the members dil, 35, and el may, like the members l?) and 1l?, be ci channel-shaped cross section. The inner vertical members 23d and @il of the left-hand set of sashes ld, and i5, es shown in Fig. 4, have vertical cover plates d@ secured to the outer edges oi.fthe webs il@ thereof, each ci' the plates @il having vertical rib di. The inner vertical members till and dii of the right-hand set of sash members lil, 1d, and 'i5 have cover plates 90 secured in the outer edges of the walls d@ thereof, such cover plates 9G being provided with vertical ribs di' adapted to overlap the ribs 9i when the sashes are in closed position so that the cooperating pairs thereof engage on a central plane through the Window opening 22. n Fig. 11, the right-hand and left-hand sashes 13 are shown in. engagement in the central plane defined by a stop member 93 in the form of a rectangular block secured to the lower track member 45 by means of screws 9d. Thelower ends S5 of the vertical cover strips di and 9| are disposed proximate to the upper face of the block 93 when the sash :members are in closed position.

Each of the left-hand set of sashes is provided with a projecting loop or handle 91, and each of the right-hand sashes is provided with a projecting loop or handle 93, these handles being in the same horizontal plane, but, as shown in Fig. 10, the respective handles 91 and 98 are disposed in diierent vertical planes so that the handles 91 will pass the handles 93 and enter recesses 500 formed in the front vertical members 84 and S6 of the right-hand sashes, while the handles 98 pass into the recesses |0| formed in the forward vertical members 84 and 86 of the lefthand sashes. As shown in Fig. 10, suitable openings |02 and |03 are provided in the vertical cover strips 9| and 9 I through which the handles 91 and 98 may enter the recesses |00 and |0|. As shown in Figs. 3, 9, and 10, vertically elongated openings |04 and |05 are formed in the inner webs 80 in alignment with the handles 91 and 58. In each recess a latch member |06 is pivotally mounted, this latch member comprising l aplate |01 having its leftward end |00 seated in a suitable socket ||0 formed in the member 9| adjacent the opening |02. In a position to engage the vertical portion l of the loop or handle 91, the plate |01 is provided with a shoulder ||2. A

spring H3 behind the latch member |06 urges the same forwardly toward its engagement position, this forward movement being limited by a stop i i4. When a pair of cooperating sash members are in closed position, as shown in Figs. 9 and 10, the latch means |06 will operate to prevent movement of the sash members from closed position. The latch means, however, may be readily released irom the inside by pressing outwardly on a tongue H which extends forwardly from the rightwarol or swinging end ofthe latch itil.

An additional feature o the invention resides in the simple means provided for securement of panes or glass ii'i in the sash members 13 and screens im in the sash members 1d, the securing means of the frames 'i3 and-Jil being identical and being adapted for use with a sheet member consisting or either glass or screen. The vertical and horizontal members iid, 85, l5, and i6 forming the sashes i3 and ld have, as shown to enlarged scale in Fig. i0, inwardly" directed major flanges i2@ and minor anges ii deriing channels i adapted to receive secuiingjjstrips V23. The major anges it@ are provided with grooves ltd facing the channel S22, and the minor iianges E25 are formed with inwardly facing lips E25. The securing strips 523 have edges i2@ formed to fit under the lips iti, and along the sides thereof opposite to the edges i263 are provided with reis.- tively sharp edges iii? aligned with the grooves i253. Each securing strip has a shoulder H23 which cooperates with the edge portion i3d of the adjacent major ange i2@ to form a channel |32 adapted to receive the edge of a pane oi glass together with a body of putty 33 in which the edge of the glass is secured.

The process of mounting the pane of glass is substantially as follows: The sash 13 is laid upon a table with the major flange i2@ down. A layer of putty is then placed upon the upper face of the major flange, after which the glass lll is placed in the opening of the sash with the edges thereof resting upon the initially applied layer of putty. A strip of putty is then laid along the edge of the glass, and the securing strip |23 is then iorced into the upper part of the channel i22, the edge 25 thereof engaging under the lip H25.

I By use of a putty knife, the soft putty projecting along the edges or the glass is pressed into the channel 632, and the glass is thus secured in the sash in a strip of putty without touching the metal parts of the sash.

The screen i i 0 is secured in a frame 1li by placing such screen lit in the frame so that the edges thereof overlie the major flange and the groove E24 therein. The securing strip H23 is then forced into the channel |22, with the result that the sharp edge E21 thereof forces the edge of the screen into the groove H24, thereby iirmly securing the screen.

My new window unit also provides a simple and efdcient shutter structure |40 mounted in the outer or shutter sashes 15. This shutter struc ture consists, as shown in Figs. 3,15, 6, and 7, of a plurality of horizontal strips I4| of metal having their upper edges |42 bent inwardly at essentially an angle of 45, as shown in Fig. 7. On the ends of the strips |4| adjacent the upperbent edge opening and across the edges ofk the diagonally bent portions |42. This actuating bar is pivotally connected to each inwardly bent portion, which may be accomplished by means of small rings `or loops |45 mounted on the actuating bar |41 and passing through openings in the edge portions |42. The bent portions M2 of the members Mi are then caused to act aslevers 'by which the members iii may be swung lbetween closed and open positions. By moving lthe actuating bar |51 downwardly from the position in which it is shown in Figs. and 7, the shutters or members |4| may be swung toward open position.

As shown in Figs. 5 and 6, a simple latch means is provided for controlling the position of the actuating bar |51, this latch means consisting of a small bloeit |55 having a shoulder ibi near its upper end adapted to be engaged by a pawl itt on the lower end of the actuating ber |41 when the actuating bar is raised to its highest position and the shutter strips tdi are closed. The biocls |55 has a series of notches |55 below the shoulder iti adapted. to be engaged by the pawli on the bar M1 when the bar |41 is moved downwardly. A springv |55 is provided adjacent the notches |53 and engages the lower end of the bar |41 in a manner to force the same toward the block |50. For operation of the actuating bar |51, a small handle |55 is provided thereon so that the lower end of the bar |41 may be moved outwardly or rightwa'rdly relative to the block |55 and then downwardly 'to a desired position of adjustment, giving adesired degree of opening of the shutters |4|. When the shutters |4| are in closed position, the lower edges |51 thereof overlap the bent edge portions |42 vor the downwardly succeeding shutters so that a continuous wall is formed.v

When the shutters |'4| are swung into open position, they resemble the commonly employed Venetian blind, holding out the sunlight but permitting s. relatively free passage of air. When use of the shutter sashes is not desired, they may be moved into concealment in the side spaces 54 thereby removing them from view which is an improvement over the common type of shut? ter construction in which the shutter members are hinged at the sides of a window opening and are swung back against the outer face of the building when not in use.

In addition to the side covering sheet-s 25, the frame structure 50 may be further enclosed by a top sheet of metal |55 across the upper frame 'members 5| and 32 and by end sheets |50 for closing the end of the window unit. These end walls |50 may be extended downwardly so that u the lower ends |52 thereof will provide legs on which the window unit may stand. For han' dling the window unit 20, a strap or handle |53 is secured to thetop thereof by means of rivets |54, one of which rivets passes through a slot |55 which permits the handle to be flattened :when force is applied thereon, without transmitting a. distorting force to the structure of the window unit.

'I'he window unit is employed :En the following manner. As shown in Fig. 3, a rectangular opening is formed in the frame structure of a building between studs |1 which extend vertically between a door sill E12 and a plato |15. The upper and lower limits of the opening |15 are defined by horizontal members |14 and |15, the member |15 being carried on posts |11. The horizontal member |15 is preferably 'placed level in the installation thereof, and the member |14 is placed at such distance thereabove that when the window unit is placed in the opening |10, the handle |53 will pass freely under the member |14. The member |53, therefore, determines the height of the opening |10 and assures that the member |14, should it be deflected due to superimposed loads will not press against the main structure of the windowl unit and cause a deformation thereof. The handle is so constructed that should the mem= ber |14 be deflected downwardly. the handle .be flattened without producing a deformation of the window unit structure. The length of the opening |15 is slightly greaterv than the length of the window unit so that the end walls |50 of the window unit will not engage the studs |1| and so that spaces |15 will be left therebetween. If desired, layers of felt or other resilient material may be placed in the spaces for the purpose of temporary spacing, but thisis not necessary.

After the window unit is placed in the window l the opening |14. The members |50, however,y

do not interfere with a relative movement of the window unit and the building frame structure in a direction parallel to the plane of the wall defined by the frame structure. Therefore, a downward movement of the frame members |11, |14 and |15 after completion of the wall will not place distorting stresses on the window unit.

A feature of the invention is to provide a wall structure having a window unit therein which is prevented from transverse movement by stops secured to the frame structure and which is tied to the facing element or elements of the well, such as the latch 43 and plaster 44 shown in Fig. 4. As shownin this flgurethe side wells 25 may be bent outwardly at |52 and |53 to provide a lborder flange or border member around the win- -dow opening 22 to which the wall facing element may be secured. One method of securing thev wall facing element 42 is to place strips of wood |54 around one of the border flanges |52, securing these strips in place by means of screwsv |55. y

The metal lath is then carried across the outer faces of the studs and other structural members, and across the outlying or peripheral portions of the window unit, to be secured at |55 to the rectangular frame consisting of the members |54. The outer edge of the border ange |52 then serves as a plaster stop around the opening. In addition to being tied tothe window unit at the border of the window opening, the wall element is also tied to the sides 23 by use of metal fins |51 having flanges |55 whereby they may be secured to the side walls or plates 25 by spot welding. These fins |51 are provided with openings |50 through which wire loops |5| are passed for the purpose of transversely supporting the metal lath 43, at least until the plaster 44 is applied. The wire loops ISI permit such -slight relative movement of the wall facing element v42 and the window unit that changes in form due to expansion and contraction will not cause cracking of the plaster. After application of the wall facing element or elements 42, the window unit ls rigidly secured in operative position without the window unit being tied to the building frame in such a manner that movement-of one or more of the building frame members will distort the Window unit so as to either move the Window unit from horizontal position or dis-- align the upper andi lower tracks in such a manner that the sashes will bind therein. For example, after completion of the building, a second story load applied to one of the studs I'H may cause the same to recede a short distance. This downward movement of the stud will not in any way affect the window unit, for it has no direct engagement with the window unit which will continue to be supportedon the horizontal member 15 or by the wall facing element or elements 42.

The window unit 20 has very pronounced weatherproof features due to the construction thereof, so that when the sashes are in closed position, a very effective closure of the window opening 2-2 is accomplished. As shown in Figs. ll'and 12, pins 200 are projected upwardly near the center of the inner rib or rail 48. When the inner sashes 'i3 are moved into closed position, the pins 200 are engaged by projections 20| formed on the inner faces of the webs 80 at the lower edges of the sashes 13, as shown in Fig. 5. The engagement of the projections 20| with the pins 200' is effective to move the lower portions of the sashes 'i3 inwardly so that the webs 80 will rest against the outer vertical faces of the lower frame member 33.

Although I have herein shown and described my invention in simple and practical form, it is recognized that certain parts or elements thereof are representative of other parts, elements, or mechanisms which may be employed in substantially the same manner to accomplish substantially the same results; therefore, it is to be understood that the invention is not to be limited to the details disclosed herein but is to be accorded the full scope of the following claims.

I claim as my invention:

1. A window structure of the character described, including: a wall frame having an opening formed between a pair of laterally spaced vertical members and upper and lower horizontal members spaced apart vertically; a window unit in said opening of said wall frame, resting on said lower horizontal member, said window unit being of such size relative to said opening as to leave spaces between the ends of said unit and said vertical members and a space between the top of said unit and said upper horizontal memloer;v and means for holding said unit in said opening whereby only the transverse movement of said unit in said wall opening is restrained.

2. A window structure of the character described, including: a wall frame having an open ing formed between a pair of laterally spaced vertical members and upper and lower horizontal members spaced apart vertically; a window unit in said opening of said wall frame, resting on said lower horizontal member, said window unit being of such size relative to said opening as to leave spaces between the ends of said unitand said vertical members and a. space between the top of said unit and said upper horizontal member; means for holding said unit in said opening, consisting of members so placed as to limit only the transverse movement of said unit in said wall opening; and a wall facing element extending across said vertical and horizontal members of said wall frame and being tied to said window unit.

3. A window structure of the character described, including: a wall frame having an opening formed between a pair of laterally spaced vertical members and upper and lower horizontal members spaced apart vertically; a window unit in said opening of said wall frame, said window unit being of less width and height than said opening of said wall frame; and means for holding said window unit in said opening, consisting of means extending from said wall frame and across the side faces of said window unit so as to limit transverse movement of said unit and permit a degree of free movement of said window unit in the vertical plane dened by said wall frame in order that movement of the members of said wall frame will not distort said window unit.

4. A window structure of the character described, including: a wall frame having an opening formed between a pair of laterally spaced vertical members and upper and lower horizontal members spaced apart vertically; a window unit in said opening of said wall iframe, said window unit being of less width and height than said opening of said wall frame and having a window opening defined by a border member; means for holding said window unit in said opening, consisting of means extending from said wall frame and across the side faces of said window unit so as to limit transverse movement of said unit and permit a degree of free movement of said window unit in the vertical plane defined by ysaid wall frame in order that movement of the members of said wall frame will not distort said window unit; and a wall facing element extending from said members of said wall frame and across the peripheral portion of said window unit to said border member, said wall facing element being tied to said border member of said window unit in such a manner that the position of said window unit is controlled by said wall facing element,

5. A window structure lof the character described, including: a wall frame having an opening formed between a pair of laterally spaced vertical members and upper and lower horizontal members spaced apart vertically; a window unit in said opening of said wall frame; said window unit being of less width and height than said opening of said wall frame and having a window opening defined by a border member; means for holding said window unit in said opening, consisting of means extending' from said wall frame and across the side faces of said window unit so as to limit transverse movement of said unit and permit a degree of free movement of said window unit in the vertical plane defined by said wall frame in order that movement of the members of said wall frame will not distort said window unit; and a wall facing element consisting of a web of lath and plaster, extending from said members of said wall frame and across the peripheral portion of said window unit to said border member, said wall facing element being tied to said border member of said window unit in such a manner that the position of said window unit is controlled by said wall facing element.

6. A window structure of the character described, including: a wall frame having an openingV formed between a pair of laterally spaced .vertical members and upper and lower horizonof said window unit in the vertical plane dened by said wall frame in order that movement of the members of said wall frame will not distort said window unit; a wall facing element extending from said members of said wall frame and across the peripheral portions of said window unit to said border member, said wall facing element being tied to saidV border member of said window unit in such a manner that the position of said window unit is controlled by said wall facing element; and means for securing said wall facing element to the peripheral portions of said Window unit.

7. A window structure of the character described, including: a wall frame having an lopening formed between a pair of laterally spaced vertical members and upper and lower horizontal members spaced apart vertically; a window unitin said openingof said wall frame, said window unit being of less width and height than said opening of said wall frame and having a window opening defined by a border member; means for holding said window unit in said opening, consisting of means extending from said wall frame and across the side faces of said window unit so as to 'limit transverse movement of said unit and permit a degree of free movement of said window unit in the vertical plane defined by said wall frame in order that movement of the members of said wall frame will not distort said window unit; a wall facing element extending from said members of said wall frame and across the peripheral portions of said Window unit to said border member, said wall facing element being tied to said border member of said Window unit in such a manner that the position of said window unit is controlled by said wall facing element; and means for yieldably securing said wall facing element to the peripheral portions of said window unit.

8. A window unit of the character described, including: a frame defining a window opening and spaces at the ends of said opening and com-v municating therewith; closure members adapted to be moved from said spaces into said opening; lower track means for said closure members, said lower track means extending across said opening and into said spaces; and upper track means for said closure members, said upper track means extending across the upper part of said opening and into the upper parts of said spaces, there being adjustment means for bodily raising and lowering said upper track means.

9.'A window unit of the character described, including: a frame defining a window opening and spaces at the ends of said opening and communicating therewith; closure members adapted to be moved from said spaces into said opening; lower track means for said closure members, said lower track means extending across said opening and into said spaces; upper track means for said closure members, said upper track means extending across the upper part of said opening and into the upper parts of said spaces, there being adjustment means for bodily raising and lowering said upper track means; and a wall under said lower track means disposed so as to drain said spaces through the lower part of said window opening.

10. A windowunit of the character described, including: a frame defining a window opening and a space at the side of said opening and communicating therewith; a closure member adapted to be moved from said space into said opening; lower track means for said closure member, said lower track means extending across said opening and into said space; and upperftrack means for said closure member, said upper track means extending across the upper part of said opening and into the upper part of said space, there being adjustment means for bodily raising and lowering said upper track means.

11. A window unit of the character described,

including: a frame dening a window openingv and a space at the side of said opening and communicating therewith; a closureV member adapted to be moved from said space into said opening;

' lower track means for said closure member, said lower track means extending across saidl opening and into said space; upper track means for said closure member, said upper track means extending across the upper part of said opening and into the upper part of said space, there being adjustment means for bodily raising and lowering said municating therewith; closurel members adapted to be moved from said spaces into said opening; track means for guiding the movement of said closure members so that the adjacent edges thereof will engage when said closure members are in closed position; a handle extending from the adjacent edge of each of said closure members toward the edge of the other of said closure members, there being a recess in the edge of each closure member to receive the handle of the other closure member; and lock` means operative in one of said recesses to engage the handle of the other closure member, wherebyv to hold said closure members in closed position.

13. A window unit of the character described, including: a frame defining a window opening and spaces at the ends of said opening and communicating therewith; closure members adapted to be moved from said spaces into said opening; track means for guiding the movement of said closure members so that the adjacent edges thereof will'engage when said closure members are in closed position; a handle for each of said closure members formed by a loop extending from the adjacent edge vof each of said closure members toward the edge of the other of said closure members, there being a recess in the edge of each closure member to receive the handle of the other closure member; and lock means operative in one of said recesses to engage the outer part of the loop therein, whereby to lock said closure members in closed position obstructing said window opening.

14. A window structure of the character described, including: a wall frame having an opental members spaced apart vetrically; a window unit in said opening of saidwall frame, there being spaces between the ends of said unit and said vertical members and a space between the top of said unit and said upper horizontal member; and means for securing said window unit in said opening so as to have restricted movement in transverse direction relative to said wall trame and a free limited upward and horizontal movement relative to said wall frame in the direction of the vertical plane defined by said wall frame.

15. A window unit of the character described, including: a frame dening a window opening and spaces at the ends of said opening andcommunicating therewith; closure members adapted to be moved from said spaces into said openings; lower track means for said closure members, said lower track means extending across said opening and into said spaces; and upper track means for said closure members, said upper track means extending across the upper part of said opening, *here being adjustment means for bodily raising and lowering said upper track means.

16. A window unit of the character described,

including: a frame dening a window opening and spaces at the ends of said opening and communicating therewith; closure members adapted to be moved from said spaces into said opening; lower track means for said closure members, said lower track means extending across said opening and into said spaces; and upper track means for said closure members, said upper track means extending across the upper part of said opening, there being adjustment means for vertically moving said upper and lower track means relatively together and apart, l

17. A window unit of the character described, including: a frame dening a window opening and spaces at the ends of said opening and communicating therewith: closure members adapted to be moved from said spacesl into said opening; track means for 'guiding the movement oi! said closure members so that the adjacent edges thereof will engage when said closure members are in closed position; a handle extending from the adjacent edge of one of said closure members toward the edge of the other of said closure members, there being a recess in the edge of said other closure member to receive said handle; and lock means operative in said recess to engage said handle, whereby to hold said closure members in closed position.

18. A window structure o! the character described, including: a wall frame having an opening formed 'between a pair of laterally spaced vertical members and upper 'and lower horizontal members spaced apart vertically; a window unit in said opening of said wall frame, resting on saidlower horizontal member, there being spaces between the ends of said unit and said vertical members and a space between the top of said unit and said upper horizontal member, said window unit having a member resiliently disposed thereon for indicating the height of said opening, said resilient member being so formed and placed as to be deformable by a change in position of said members of said wall frame without application of distorting stresses to said window unit; and means for holding said unit in said opening.

19. A window unit of the character described, including: a frame defining a window opening and a space at the side of said opening communicating therewith, said frame having a bottom wall extending across said opening and said space; a closure member adapted to be moved from said space into said opening; lower track means for said closure member, said lower track means extending across said opening and into said space and projecting above said bottom wall whereby drainage may occur across said bottom wall from one side of said track means to the other; an upper track means for said closure member, said upper track extending across the upper part of said opening and into the upper part of said space.'

AR'I'HUR E. Fisk. 

